Description of Business and Accounting Policies (Details) - USD ($) $ in Millions	3 Months Ended	6 Months Ended
Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015	Dec. 31, 2015
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Entity Number of Employees	3,400		3,400
Company Employees Participating in Collective Bargaining Agreement, Percentage	30.00%		30.00%
Number of customers that exceed 10% of total accounts receivable	1		1
Accounts Receivable from customers greater than 10%, percentage	22.00%		22.00%		22.00%
Revenue from customers greater than 10%, percentage	12.00%	11.00%	11.00%	12.00%
Restructuring Reserve, Current	$ 0.2		$ 0.2		$ 0.9
Restructuring Reserve, Noncurrent	$ 0.2		$ 0.2		0.2
Debt Issuance Costs Reclassified					$ 8.0

Accounts Receivable from customers greater than 10%, percentage

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Company Employees Participating in Collective Bargaining Agreement, Percentage

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- Definition

Debt issuance costs reclassified from "Other non-current assets" to "Long term debt, less current portion" pursuant to the issuance of ASU 2015-03 by FASB in April 2015.

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Number of customers that exceed 10% of total accounts receivable

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Revenue from customers greater than 10%, percentage

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Number of persons employed by the Entity

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Carrying amount as of the balance sheet date of known and estimated obligations associated with exit from or disposal of business activities or restructurings pursuant to a duly authorized plan, which are expected to be paid in the next twelve months or in the normal operating cycle if longer. Costs of such activities include those for one-time termination benefits, termination of an operating lease or other contract, consolidating or closing facilities, relocating employees, and costs associated with an ongoing benefit arrangement, but excludes costs associated with the retirement of a long-lived asset.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 420
-SubTopic 10
-Section S99
-Paragraph 2
-Subparagraph (SAB Topic 5.P.4(b)(2))
-URI http://asc.fasb.org/extlink&oid=27011515&loc=d3e140904-122747

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 420
-SubTopic 10
-Section 50
-Paragraph 1
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=6394359&loc=d3e17939-110869

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Carrying amount as of the balance sheet date of known and estimated costs associated with exit from or disposal of business activities or restructurings pursuant to a duly authorized plan, which are expected to be paid after one year or beyond the next operating cycle, if longer. Costs of such activities include those for one-time termination benefits, termination of an operating lease or other contract, consolidating or closing facilities, and relocating employees, and costs associated with an ongoing benefit arrangement, but excludes costs associated with the retirement of a long-lived asset.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 420
-SubTopic 10
-Section 50
-Paragraph 1
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=6394359&loc=d3e17939-110869

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